Prof. Qinglin
Roger Yu
Department of
Math. and Stat.
Thompson Rivers
University, Canada
Professor
Email: yu@tru.ca
Qualifications
1991 Ph.D.,
Department of Mathematics and Statistics, Canada
1985 M.Sc.,
Department of Mathematics, Shandong University, China
1982 B.Sc.,
Department of Mathematics, Shandong University, China
Publications
(Selected)
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R. Xu and Q. L. Yu, Note on toughness and (k, r)-factor-critical graphs,
Bulletin of the Institute of Combinatorics and its Applications, 20(2000),
85-87.
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G. Z. Liu and Q. L. Yu, Generalization of matching extensions in graphs,
Discrete Math. 231(2001), 311-320.
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Q. L. Yu, A note on extendability and factor-criticality, Annals of
Combinatorics 6(2002) 479-481.
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R. Xu and Q. L. Yu, An Ore-type condition for the existence of k-factors
with prescribed properties, Congressus Numerantium 162(2003), 97-109.
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R. Xu and Q. L. Yu, Degree conditions for k-extendable , Congressus
Numerantium, 163(2003), 189-195.
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D. Lou and Q. L. Yu, Connectivity of k-extendable graphs with large k,
Discrete Applied Math. 136(2004), 55-61.
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D. Lou and Q. L. Yu, Sufficient conditions for n-critical graphs,
Australasian Journal of Combinatorics, 29(2004), 127-133.
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P. Wang and Q. L. Yu, On the degree monotonicity of (n; k)-cage, Bulletin
of the Institute of Combinatorics and its Applications, 43(2005), 37-42.
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M. Kano and Q. L. Yu, Pan-factorial property in regular graphs, The
Electronic Journal of Combinatorics, 12(2005), #N23.
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L. C. Zuo, Q. L. Yu and J. L. Wu, Tree coloring of distance graph with
real interval set, Applied Mathematics Letters, 19(2006) 1341-1344.
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G. Z. Liu and Q. L. Yu, On (n, k)-extendable graphs and induced subgraphs,
International Mathematical Forum, 2, 23(2007), 1141-1148.
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Z. M. Jin, H. F. Yan and Q. L. Yu, Generalization of matching extensions
in graphs (II), Discrete Applied Math. 155 (2007) 1267-1274.
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Y. H. Ma and Q. L. Yu, Isolated toughness of graphs and the existence of
[a, b]-factors, J. of Combinatorial Mathematics and Combinatorial Computing, 62
(2007) 147-157.
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Y. J. Wu and Q. L. Yu, On uniform star-factors in graphs of girth three,
Australasian Journal of Combinatorics, Vol. 39 (2007), 155-161.
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Q. L. Yu and Z. Zhang, Extremal properties of (1, f)-odd factor in graphs,
Ars Combinatorics, 84(2007), 161-170.
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G. Z. Liu, L. Zhang and Q. L. Yu, Maximum fractional k-factors and
connected fractional 1-factors in graphs, Applied
Math. Letters, 20(2007) 1237–1243.
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G. Z. Liu and Q. L. Yu, Strongly pan-factorial property in cages, Ars
Combinatorics, Vol. 87 (2008) 263-269.
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B. G. Xu and Q. L. Yu, A note on (3,1)-choosable toroidal graphs, Utilitas
Mathematica, 76(2008), 183-189.
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Y. H. Duan, H. D. Wu and Q. L. Yu, On graphs determined by chromatic and
flow polynomials, Discrete Applied Mathematics, 156(2008) 1300-1309.
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T. Wang and Q. L. Yu, Vertex-coloring 13-edge-weighting in graphs, Front.
Math. China, 3 (2008), 581-587.
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T. Wang and Q. L. Yu, Factor-criticality in 3-dominating-critical graphs,
Discrete Math. 309 (2009) 1079-1083.
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Y. H. Duan, H. D. Wu and Q. L. Yu, Twist wheel is Tutte-polynomial unique,
Discrete Math. 309 (2009) 926–936.
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L. C. Zuo, Q. L. Yu and J. L. Wu, Vertex arboricity of integer
distance graph G(D_{m,k}), Discrete Math. 309 (2009) 1649-1657.
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H. Lu, X. Yang and Q. L. Yu, A note on vertex-coloring edge-weighting of
graphs, Front. Math. China, 4 (2009) (2) 325-334.
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M. Kano, H. Lu and Q. L. Yu, Component factors with large components in
graphs, Applied Math. Letters, 23 (2010) 385-389.